Blowtorch



C. H. HOWELL.

BLOWTORCH.

APPLICATION FILED "M21. 19-20.

' Patented Aug. 9, 192B FlE FIILE- WITNESSES UNETEE STATES CHARLES H. HOVIELL, 0F COLUMBUS, OHIO.

BLOWTORCH.

Application filed May 21,

T 0 all whom it may concern.

Be it known that I, Crmnnns H. HOWELL, a citizen of the United States, residing at Columbus, in the county of Franklin and State of ()hio, have invented certain new and useful improvements in Blowtorches; and i do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to portable blowtorches adapted to operate with volatile fuel; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed whereby a better mixture of the volatile fuel with the blast of air is obtained and whereby a larger and more powerful flame is produced.

In the drawings, Figure 1 is a side view of a blow-torch constructed according to this invention, some parts being shown in section. Fig. 2 is a cross-section, taken on the line m-x in Fig. 1. Fig. 3 is a detail plan view of the blow-pipe nozzle.

Two receptacles 2 and 8 for the volatile fuel are provided, and are secured side by side in any approved way. These receptacles are preferably cylindrical, and the fuel may be of any approved kind, such as gasolene, naphtha, benzin or alcohol. The receptacle 2 has a suitable wick-holder or tube 4 at its top, and 5 is a lamp-wick which projects through the tube 4. This lampwick is saturated with the volatile fuel, which may be introduced into the receptacle 2 by unscrewing the screwthreaded plug of the wick-holder, or through any other convenient filling opening. A cap or extinguisher 6 is provided in the usual way for covering the exposed end of the wick when the torch is in use.

The receptacle 3 or air saturator has a blow-pipe nozzle 7 secured to its top, and this nozzle is also preferably provided with a screwthreaded plug 8 for engaging with the top of the receptacle. This plug may serve as a filling stopper, or any other convenient means may be used so that volatile fluid can be introduced into the receptacle 3.

The blow-pipe nozzle preferably consists of two tapering tubes secured side by side with their outlet end portions converging Specification of Letters Patent.

Patented Ari 9, 1921.

1920. Serial No. 383,232.

toward each other. When a blast is forced through these tubes, crosswise of the frame at the top of the lamp-wick, an intensely hot, and pointed or ii-shaped flame is produced, as indicated by the dotted lines in the drawings.

The blast of air is supplied through a flexible blow-tube 10 having a mouth-piece 12. A coiled pipe 14 of copper or any other suitable material is arranged inside the saturator or receptacle 3, and is provided with a multiplicity of very small holes or perforations 15 formed in its sides both inside and outside the coil. The upper end of the coiled pipe 14 is secured to a junction piece 16 on one side of the upper part of the receptacle 3.

swivel-joint pipe 17 is provided for connecting the end of the pipe 14 with the flexible air pipe 10. This joint pipe is curved to form a quarter bend, and it is provided with. a joint ring 18 which is held in opera tive connection with the pipe 14 by any suitable cap 19 secured to the junction piece 16.

The perforated pipe 14 is lapped with a covering 20 of absorbent gauze or other suit able material, and the helical coil of the pipe has a roll 21 of similar absorbent material at its center. The remainder of the space in the receptacle 3 is packed with absorbent material 22. The volatile fuel is poured into the two receptacles in sulficient quantity to saturate the absorbent material in them without leaving any free liquid in the receptacles.

In use the lower parts of the receptacles are grasped in the hand, and the flexible pipe and its swivel joint permit the torch to be moved about in all directions. The lamp-wick is ignited in the usual way, and the air is forced through the saturator and across the flame issuing from the wick. The air is intimately mixed with the hydrocarbon fuel as it passes through the fine perforations of the coiled pipe 14 and the absorbent material which surrounds it, and the inflammable mixture is ignited by the flame at the wick, the flames being united and producing an intense heat particularly at the point to which they are converged.

Sufficient volatile fuel can be placed in the receptacles for a use of several hours duration, and the device is adapted to be 7 the said receptacles, a perforated coiled pipe carried in the pocket and used by jewelers,

electricians and all others who have need of ceptacles being provided with a lamp-wick,

a blow-pipe nozzlesecured to the other re ceptacle and provlded with two converging tubes arranged to deliver the blast crosswise 'of the lamp-wick, absorbent material for holding volatile fuel arranged in the said receptacles, and means for i forcing air through the absorbent material in the blowpipe receptacle. 7

2. A blow-torch comprising two, receptacles secured together, one of the said receptacles being provided with a lanip wick, a blow-pipe nozzle secured to the other receptacle and arranged to deliver the blast crosswise of the lamp-wick, absorbent material for holding volatile fuel arranged in arranged in the blow-pipe receptacle, and means for forcing air through-r the perforations of the said coiled pipe and the absorbent material surrounding it.

8. A blow-torch comprising two receptacles secured together, one of the said receptacles being provided witha lamp-wick,

a blow-pipe nozzle secured to the other 'rearranged in the blow-pipe receptacle'and' having its end secured toIthe' said recep-' tacle, a sw vel-ml; plpe operatively con- ,nected with the inlet'endof the said coiled pipe and free to revolve about it, and means teri'al.

In testimony whereof I have aflixed my signature.

7 CHARLES H. HOWELL. 

